SOLUCIONS 7 (PDF)




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Title: Microsoft Word - Documento8
Author: SARA ALVAREZ CANTERO

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P = m× g

SOLUCIONS  7  
 
 
                                 
EIX  X  
Px = P × sin α

P = 100 × 9,8

Px = 980 × sin 70 º

P = 980 N

Px = 920,89 N

 
 

 
 
 

EIX  Y  
Py = P × cos α

Py = 980 × cos 70 º
Py = 335,17 N
Py = N = 335,17 N  

 
Ffreg = N × µ
                                                                                                                                           
Ffreg = 335,17 × 0,2
Ffreg = 67,03 N
∑F = m×a
 

920,89 − 67,03 = 100 × a
a = (920,89 − 67,03) ÷ 100
a = 8,5m / s

 






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